Patent US1499559A successfully refreshed from Google Patents.
Patent US2886612A successfully refreshed from Google Patents.
US2886612A
Expired / Lapsed
US
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Separation and recovery of acetylene
Assignee: Phillips Petroleum Co
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Filing: 1956-01-03
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Granted: 1959-05-12
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Expires: 1976-01-03
Abstract
No abstract record available.
Inventors
- 👤 Robert L Mcintire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:22
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A PROCESS FOR THE RECOVERY OF ACETYLENE FROM A MIXTURE OF GASES COMPRISING C1 TO C5 PLUS HYDROCARBONS WHICH COMPRISES: CONTACTING A STREAM OF SAID MIXTURE WITH AN ABSORBENT IN A HYDROCARBON SEPARATION ZONE HAVING AN ABSORPTION SECTION AND A STRIPPING SECTION; WITHDRAWING A SIDE STREAM FROM SAID SEPARATION ZONE AT A POINT OF MAXIMUM ACETYLENE CONCENTRATION; CONTACTING GASES CONTAINED IN SAID SIDE STREAM WITH A SELECTIVE ABSORBENT IN AN ABSORPTION ZONE SO AS TO SELECTIVELY ABSORB THE ACETYLENE THEREIN; RETURNING TREATED UNABSORBED GASES, NOW SUBSTANTIALLY FREE OF ACETYLENE, FROM SAID ABSORPTION ZONE TO SAID SEPARATION ZONE AT A POINT ABOVE THE POINT OF WITHDRAWAL OF SAID STREAM; AND RECOVERING SAID ACETYLENE FROM THE RESULTING RICH SELECTIVE ABSORBENT FROM SAID ABSORPTION ZONE.
Claim 2
Dependent Claim
122 words
A PROCESS FOR THE RECOVERY OF ACETYLENE FROM A MIXTURE OF GASES COMPRISING C1 TO C5 PLUS HYDROCARBONS WHICH COMPRISES: CONTACTING A STREAM OF SAID MIXTURE WITH AN ABSORBENT IN A HYDROCARBON SEPARATION ZONE HAVING AN ABSORPTION SECTION AND A STRIPPING SECTION; WITHDRAWING A SIDE STREAM FROM SAID SEPARATION ZONE AT A POINT OF MAXIMUM ACETYLENE CONCENTRATION; CONTACTING GASES CONTAINED IN SAID SIDE STREAM WITH A SELECTIVE ABSORBENT IN AN ABSORPTION ZONE SO AS TO SELECTIVELY ABSORB THE ACETYLENE THEREIN; RETURNING TREATED UNABSORBED GASES, NOW SUBSTANTIALLY FREE OF ACETYLENE, FROM SAID ABSORPTION ZONE TO SAID SEPARATION ZONE AT A POINT ABOVE THE POINT OF WITHDRAWAL OF SAID STREAM; AND RECOVERING SAID ACETYLENE FROM THE RESULTING RICH SELECTIVE ABSORBENT FROM SAID ABSORPTION ZONE.
References Cited (Backward Citations)
US1405395A
Cited
US2661812A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |